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Polyamide/polyphenylene ether fibers and fiber-forming method

a polyphenylene ether and polyamide technology, applied in the field of polyamide/polyphenylene ether fibers and fiber-forming methods, to achieve the effect of improving strength and smoothness, and simplifying the number of polymers

Inactive Publication Date: 2013-03-28
SHPP GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a way to make strong and smooth fibers from blends of polyphenylene ether and polyamide without adding a third polymer. The invention also reduces the size of the particles in the polyphenylene ether, which makes the fiber spinning process more efficient and reduces the need for gloss-reducing additives. The resulting fibers have consistent dimensions and smooth surface, but lower gloss levels, which makes them lighter and more energy-efficient for use in transportation applications like vehicle interiors.

Problems solved by technology

In addition, the invention limits the cross-sectional area of the largest particles of polyphenylene ether, which would otherwise lead to inefficiencies in the melt spinning of polyphenylene ether / polyamide fibers, for example due to the increased pack pressure and clogging of spinneret pores which such large dimension particles produce.

Method used

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  • Polyamide/polyphenylene ether fibers and fiber-forming method
  • Polyamide/polyphenylene ether fibers and fiber-forming method
  • Polyamide/polyphenylene ether fibers and fiber-forming method

Examples

Experimental program
Comparison scheme
Effect test

examples 1-4

, Comparative Examples 1-16

[0109]Components used to form fiber-spinning compositions are summarized in Table 1.

TABLE 1ComponentDescriptionPPE, 0.46Poly(2,6-dimethyl-1,4-phenylene ether), CAS Reg. No.25134-01-4, having an intrinsic viscosity of about 0.46 deciliterper gram measured in chloroform at 25° C., and a weight averagemolecular weight of about 65,000 atomic mass units; obtained asPPO 646 from SABIC Innovative Plastics.PPE, 0.40Poly(2,6-dimethyl-1,4-phenylene ether), CAS Reg. No.25134-01-4, having an intrinsic viscosity of about 0.40 deciliterper gram measured in chloroform at 25° C., and a weight averagemolecular weight of about 55,000 atomic mass units; obtained asPPO 640 from SABIC Innovative Plastics.PPE, 0.30Poly(2,6-dimethyl-1,4-phenylene ether), CAS Reg. No.25134-01-4, having an intrinsic viscosity of about 0.30 deciliterper gram measured in chloroform at 25° C., and a weight averagemolecular weight of about 45,000 atomic mass units; obtained asPPO 630 from SABIC Innova...

examples 3 and 4

, Comparative Examples 20-22

[0116]These examples illustrate fiber production. Five compositions were prepared by blending the components and amounts summarized in Table 5. The composition of Example 4 was prepared by blending a composition prepared according to Example 3 with an equal quantity of the polyamide in a second run through the extruder.

[0117]Micrographs corresponding to Examples 3 and 4, and Comparative Examples 20 and 21 are presented in FIGS. 14-17, respectively. Image analysis was done using commercially available software Clemex Vision PE and Vision Lite 6.0 and FIGS. 14-17 were colored for illustration, with red signifying the polyamide-containing continuous phase, and blue signifying the polyphenylene ether-containing disperse phase. Polyphenylene ether particle size was plotted using Minitab software, version 15, from Minitab, Inc. The compositions of Examples 3 and 4 had finely divided polyphenylene ether disperse phases, while the compositions of Comparative Exam...

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Abstract

A fiber is prepared by melt extruding a composition including specific amounts of a polyamide and a polyphenylene ether along with a compatabilizer. Particular combinations produce fibers having a desirable combination of good tenacity and low denier per fiber. Compared to a fiber prepared from polyamide alone, the present fiber exhibits improved heat resistance and flame resistance.

Description

BACKGROUND OF THE INVENTION[0001]Nylon fibers are widely used in such diverse applications as carpets, ropes, parachutes, and tires. However, for some applications, including electrical insulation and fabric for protective clothing, there is a desire for nylon fibers exhibiting increased heat resistance, increased flame resistance, reduced moisture absorption, or some combination of these properties.[0002]It was previously reported that the incompatibility of polyphenylene ether and polyamide led to difficulties in producing fibers. For example, U.S. Pat. Nos. 5,225,270 and 5,334,444 to Bhoori et al., and U.S. Pat. No. 5,559,194 to Kotek et al. disclose compositions that attempt to address this problem by requiring the addition of a third polymer component into the blend in order to produce polyphenylene ether / polyamide fibers. Specifically, U.S. Pat. Nos. 5,225,270 and 5,334,444 to Bhoori et al. require the addition of a functionalized olefinic elastomer, defined as having an ASTM ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D02G3/00C08L77/06B29C47/00C08L77/02B29C48/05B29C48/92
CPCC08L77/02Y10T428/2929C08L77/06C08L71/12D01F8/12D01F6/94D01F6/90D01F1/10B29C47/0014B29C47/92B29C2947/92514B29C2947/92704C08L71/123C08L77/00B29C48/05B29C48/92B29C2948/92514B29C2948/92704
Inventor TING, SAI-PEIGUISE, OLIVIERLEE, JUNG AHPETERS, RICHARD H.GUO, HUA
Owner SHPP GLOBAL TECH BV
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